204225231213 has 12 divisors (see below), whose sum is σ = 295998803100. Its totient is φ = 135685476096.

The previous prime is 204225231187. The next prime is 204225231251. The reversal of 204225231213 is 312132522402.

204225231213 is a `hidden beast` number, since 2 + 0 + 422 + 5 + 23 + 1 + 213 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 141975979209 + 62249252004 = 376797^2 + 249498^2 .

It is not a de Polignac number, because 204225231213 - 2²⁴ = 204208453997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204225231253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38720388 + ... + 38725661.

It is an arithmetic number, because the mean of its divisors is an integer number (24666566925).

Almost surely, 2^204225231213 is an apocalyptic number.

It is an amenable number.

204225231213 is a deficient number, since it is larger than the sum of its proper divisors (91773571887).

204225231213 is a wasteful number, since it uses less digits than its factorization.

204225231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77446348 (or 77446345 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 204225231213 its reverse (312132522402), we get a palindrome (516357753615).

The spelling of 204225231213 in words is "two hundred four billion, two hundred twenty-five million, two hundred thirty-one thousand, two hundred thirteen".